motion sensor chime,alarm while people goes into a shop,store,hotel,etc,say "Hello,Welcome" ... in 8 languages,25pcs melodies motion sensor chime,alarm while people goes into a shop,store,hotel,etc,say "Hello,Welcome ... for ring tone option;Use 3 "AA" Battery for this device;Or use external power supply transformer of DC "4.5V ... highly welcomed. Motion Sensor Alarm Say "HELLO,WELCOM" While People Pass By